Oshkosh Corporation JLG 450AJ, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTEM
6-64 – JLG Lift – 3121659
LSS READING UNDER WEIGHT 8211 MACHINE SETUP > LOAD SYSTEM ≠ NO;
The load sensor has been calibrated and Gross Platform
Weight < (0.5 * Empty Platform Weight);
Do not report if DTC 0030 is active UGM to set Platform Load
State = Overloaded Not all of the trigger conditions are met
LSS SENSOR DISAGREEMENT 8218 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 1-Cell LSS;
The UGM detects that Platform Gross 1 calculation and Plat-
form Gross 2 calculation disagree by > 10% for longer than 5
seconds;
Do not report of DTC 825 is active UGM to set Platform Load
State = Overloaded Power Cycled
LSS SENSOR - OUT OF RANGE
HIGH 8219 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 1-Cell LSS;
Strain Gauge 1 or 2 reports Out of Range High error UGM to set Platform Load
State = Overloaded Power Cycled
LSS SENSOR - OUT OF RANGE
LOW 8220 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 1-Cell LSS;
Strain Gauge 1 or 2 reports Out of Range Low error UGM to set Platform Load
State = Overloaded Power Cycled
LSS SENSOR - OUT OF CALIBRA-
TION 8221 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 1-Cell LSS;
Strain Gauge 1 or 2 reports Not Calibrated error UGM to set Platform Load
State = Overloaded Power Cycled
FRONT LEFT STEER VALVE –
OPEN CIRCUIT 8639 The UGM detects an open circuit at this output Steer Left and Right speed
limited to Creep (340AJ,
400S, 450AJ);
No response required for this
DTC (18RS, 24RS) Power Cycled
FRONT LEFT STEER VALVE –
SHORT TO BATTERY 8640 The UGM detects a short to battery at this output Disable UGM Drive Forward/
Reverse and Steer Left/Right
outputs Power Cycled
FRONT LEFT STEER VALVE –
SHORT TO GROUND 8641 The UGM detects a short to ground at this output Disable UGM Steer Left and
Right outputs Power Cycled
FRONT RIGHT STEER VALVE –
OPEN CIRCUIT 8642 The UGM detects an open circuit at this output Steer Left and Right speed
limited to Creep(340AJ, 400S,
450AJ);
No response required for this
DTC (18RS, 24RS) Power Cycled
FRONT RIGHT STEER VALVE –
SHORT TO BATTERY 8643 The UGM detects a short to battery at this output Disable UGM Drive Forward/
Reverse and Steer Left/Right
outputs Power Cycled
FRONT RIGHT STEER VALVE –
SHORT TO GROUND 8644 The UGM detects a short to ground at this output Disable UGM Steer Left and
Right outputs Power Cycled
MACHINE SAFETY SYSTEM
OVERRIDE OCCURRED 873 MSSO = Active Response described in MSSO
Influence on Machine Opera-
tion section Fault shall be retentive through Power
Cycled;
Can be reset only with an Analyzer via the
CALIBRATIONS > MSSO > MSSO RESET
menu
LSS WATCHDOG RESET 991 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
UGM detects LSS report of an anomaly exists that has caused a
WatchDog Timer reset. UGM to set Platform Load
State = Overloaded Power Cycled
Table 6-5. Diagnostic Trouble Code Chart
Help Message DTC
Fault Condition/Trigger
(For configurable items, fault applies only if
configured. All listed conditions to be met unless
stated otherwise)
Required Control
Response or State
Assignment
Conditions Required for Movement
and/or to Clear Fault